Device for cutting and embossing sheet material.



L. B. KAVANAGH. DEVICE FOR CUTTING AND EMBOSSING SHEET MATERIAL.

. APPLICATION FILED OCT. 20. 1915. 183,301,

PaIented May 16, 1916.

i Waas.:

L. B.`KAVANAGH.

DEVICE FG CUTTING AND EM'BOSSING SHEET MATERIAL.

APPLICATmN FILED 001.20. 1915.

1,183,301. .Patented 11131111916.

2 SHEETS-SHEET 2.

which the dies are made selfstrippingp, 25.

Y STATES PATE i w "i l LIONEL :BpKAvANAGIL on LEoMINsTEn, MASSACHUSETTS;

specineationiof Lettersfratent.

PatentedVMay 16, 1916.

Application'ledectoben `20, 191i Serial No. 56,983.

To. all whom t may concern .fV

Be itknow-n that I, LINEL B-KAvANAeII,

a citizenfof the United` States,residing at Leominster, in the county ofWorcester and` State of Massachusetts, `have invented. anew. and usefulDevice forl Cuttmgj andl EmbossingI Sheet Material, of which the.following is a specification.

This invention. relates to` a device, for' out,` Q

ting and embossing sheet. material, the. Vin,-

vention being capable` of general application but being moreparticularlyldesigned for useVA in the manufacture of combsand slmilarar.;`

ticles from sheet celluloid. y

`It is the general object. of` my invention to provide cooperatingcutting and. emboss-` ingdies for the purpose` defined whiclishall.simultaneously cutyand Vemboss a pair of combs or similar` articlesateach` stroke of the die-holding mechanism. y y y y With. this general`object. in` view one feature` of" my inventionrelates. to a construe`tion in cuttingand. embossingY devices.` by

thereby rendering unnecessary the provision of separate strippingdevices.

A further feature. of my invention. relates to a` construction incutting and embossing;

devices in which the thin outer edges of. the embossing dies shallbe` atalll timesre-` inforced by the relativelyrigid parts of thecuttingdevices. p

Other important features of Amy invention relate tothe positioningof'one cuttingv die and one embossing die, infeach` ofthe two relativelymovable `parts ofthe device, tol

the provision ofsecuringmeans `for the em-y bossing dies so"constructed` that"` limited movement of each 'embossing die ist per-fmittedrelative to the cutting die associated therewith, andtotheprovisionfof improved devices for yieldingly supportngwthespaced.Portions f the embossing dies.` l

Further features ofmy invention relateto certainarrangements andcombinations of parts which will be hereinafter described and" moreparticularly pointed out f in the appendedclaims. y A preferredform ofmodification thereofare invention anda shown in the draw' ings, inwhichr Figure 1 is a sectional end' elevation' of my "cuttingandembossing device; Fig."2."1s` an end elevation, partly in section andshow- .55 ing the parts in the@ osition whichthey occupy ing di'esgFig.6 is a sectional elevation taken along. the line 6-6 in Fig. 5; Fig. 7is a partial'. plan` view of a modiiiedcuttingplate, andFig. S is apartial plan view of a pair ofcombs, as pioduced by the use ofthisdevice.. l

Referring particularly to Figs. 1, 2 and 3, it will be seen that myimproved cutting and embossing device comprises two. sets of diessecured respectively to a fixed.. and toa movable` member. The" lowerset of dies comprisesa cutting` die (Figs. 3 and 4) and an embossingdie2l.` These dies are inclosedl by a cutting plate 22, the plate andthe-dies being, supported on the fixed member wliicliis formedn threeparts andcomprises a body portion 23, a bottom plate. 24 and a coverplate 25. The cuttingdie 20` is rigidly secured' to the. cover plate 25by screws 26 (Fig. 3) andthe cutting plate 22 together `with the coverplate `A is secured to the' body portion 23 by screws 27 (Figs. 2 and4). The bottom plate 24 isalso secured to the body portion23 by screws28(Fig. 2). The upper setofdies is substantiallysimilar to tlie lower setand is supported insubstantially the same manner. The upper setcomprises a cutting 'die` 30 and an embossing die 3l ittingwithin acutting plate. 32;` and secured to the movable member which comprises abodyportion 33, a head 34" and a. cover plate 35,` these parts beingsecured together in the i. manner previously` described. `The cuttingdie `is securedtof the plate 35"`by`screws36, the plates 32 and` 35 aresecured to the body portion 33 by press or other suitable machine (notshown)` Fromthe construction thus far described' it" will be` seen that`the cutting dies 20` and 30 and the cutting plates 22` and 32 are allrigidly secured to theirrespective support# ingvmembers. The embossing`dies, on the other`hand,are movably mounted relatively to theirsupporting members and also relalos tively to the cutting dies andcutting plates. The mounting of these embossing dies will now bedescribed.

vThe embossing dies are yieldingly supported and fit closely within theirregular recesses inclosed by the cutting dies and the cutting platesas clearly shown `in Fig. 4, the embossing dies being of less thicknessthan the cutting dies. A transverse bar l40 is secured by screws 41 tothe rear faceof each embossing die 21 and 31, each bar being positionedin a groove or slot`42 formed partly in the rear face of the cutting dieand partly in the outer face of the cover plate. The bars 40 engage andreinforce the spaced tooth portions of the embossing dies. anddistribute the outward thrust of certain spring plunges to be nowdescribed.

Each embossing die is held in its outer position by plungers 43, 44 and45 (Figs. 2 and 3). The plungers 43 and 44 are provided with projectingstuds which engage the rear face of one of the bars 40, while theplunger45 is screwed into the rear facev of the'solid or back portion ofone of the embossing dies 21 and 31. The plungers 43, 44 and 45 aremounted in recesses formed in one of the body portions 23 and 33 and areforced outward by heavy vspiral springs 46. l

The outward movement of each embossing die can be adjusted by turningits screwthreaded plunger 47, by which means the sharp edges of theembossing die can be brought to the exact plane ofthe cutting die andcutting plate. By the engagement of the plungers 43 and 44 with thetransverse bar40 the outward thrust of these" plungers is distributed tothe entire series of teeth of the embossing die.

The parts are sov disposed that each `portion of an embossing die ispositioned op posite to a corresponding portion of a cut-V ting die andcooperates therewith. VThe upper and lower dies are held in alinement byguide pins (Fig. 3) secured in they lbody portion 23 of the fixedmemberv by setscrews 51.

The outer or working faces of the cutting plates 22 and 32 are notcontinuous in a single plane butvare each formed with alter` nate raisedand depressed portions. The plate 22 has the raised portions 22a and 22b(Figs. 3 and 4) and the depressed portions raised portions 32 and 321and `depressed portions 32c and 32d.

As the dies are brought together, the raised and depressed portionscooperate to permit the fixed and movable members to approach closer toeach other, until the em'- Similarly the plate 32 has bossing dies are.-forced back against the n outer faces of the cover plates 25 and 35 inwhich position they can .rigidly oppose the pressure of the cutting diesand vthereby emboss the two combs Yformedat each operative stroke. Theraised portions of the cutting plates also cooperate with thev cuttingdies in trimming the thin web or waste from the edges of the combblanks.

Reference to Fig. 2 will show that the two combs M (Fig. 8)' have beenVentirely separated and that `each separate tooth of each comb has been'embossed upon vone side thereof. It will also be seen that the thinouter edges of the embossing diesv are all supported and reinforcedbythe solid fixed cutting diesy and cutting plates, so that heavyoutward pressure upon the thin edges ofthe embossingdies cannot causeinjury thereto. This is a very important advantage and one which has notbeen heretofore secured in duplicate cutting and embossing dies. Y

As the. upward movement ofthe head commences, the springs 46 will forcethe embossing dies outward to the planes ofl the cutting dies, eachembossing die thus acting as a stripper'for its cutting `die and plate.

In manufacturing combs'it is usual to provide several shapes of back foreachy differentdesign of comb, the toothed portion of each comb in theset being identical. The tooth cutting dies are comparatively expensiveand in order to permit the use of a single set of tooth cutting dies toproduce combs having' backs of different outlines I have devised themodified cutting and ernbossing dies shown in Figs. 5 and 6. With thisconstruction, each die is formed of a toothed portion anda back portion,the embossing die comprising the toothed portion Mand the back portion61 secured thereto by screws 62. Thelcutting die is similarly composedof a toothed portion 63 and a back portion 64 secured together by screws65. With this construction the back portions 61 and 64 may be readilyremoved and other back vportions of different outline may be substitutedtherefor. ItA` will be understood that a separate cutting plate 66 (Fig.7) is necessarily provided for each different set of backs.

ilo

Having thus described my invention it i sheet material, a supportingmember, a cutting die fixed thereto, an embossing die movably supportedon said member, and formed with spaced tooth portions, and a yieldinglysupported transversebar secured to said embossing die, underlying andsupporting said tooth portions, and vertically movable therewith.

3. In a device for cutting and embossing sheet material, a supportingmember, a cutting die fixed thereto, an embossing die movably supportedon said member and formed with spaced tooth portions, a transverse barsecured to said embossing die, underlying said tooth portions, andvertically movable therewith, and spring-pressed plungers engaging saidtransverse bar to force said embossing die outwardly to the plane of thecutting die.

et. In a device for cutting and embossing sheet material` a supportingmember, a cutting die lixed thereto, an embossing die movably supportedon said member and formed with spaced tooth portions, a transverse barsecured to said embossing die, underlying said tooth portions, andvertically movable therewith, spring-pressed plungers engaging saidtransverse bar to torce said embossing die outwardly to the plane of thecutting die, and an additional spring-plunger screwthreaded into saidembossing die, whereby the outward movement of said die may be adjusted.

5. In a device for cutting and embossing sheet material, a supportingmember, a cutting plate fixed thereto, a cutting die rigidly mounted onsaid member, and an embossing Adie movably mounted on said member, eacho t said dies comprising a toothed portion, a

detachable back portion and means for securing said parts together,whereby ditlerent sets of backs may be interchangeably used with a.single tooth portion.

6. A device for cutting and embossing sheet material comprising fixedand movable supporting members, a cutting plate fixed to each member, acutting die rigidly mounted on each member, and an embossing die movablymounted on each member, said cutting plates forming inclosing frames forsaid dies and each having its outer surface formed at two dili'erentelevations, the depressed portions of one cutting plate cooperating withthe raised portions oi' the other to permit closer approach of the dies.

7. A device for cutting and embossing sheet material comprising fixedand movable supporting members, a cutting die rigidly secured to eachmember, an embossing die movably mounted on each member, and a cuttingplate rigidly secured to each member and inclosing said rigid dies, saidcutting die and cutting plate being provided with straight verticalwalls closely engaging and supporting the edges of the embossing die inall positions thereof, each embossing die being eliective to strip theembossed material from its associated cutting die.

In testimony whereof I have hereunto set my hand.

LIONEL B. KAVANAGH.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Eatents,

Washington, D. C.

